18 Watt Drill Template
Fuzz Dog · 1590B
Template details
- Circuit
- 18 Watt
- Vendor
- Fuzz Dog
- Enclosure
- Hammond 1590B
- Dimensions
- 59.3 × 111.2 × 27 mm
- Layout
- 1590B 3-Knob (Type 1)
- Category
- Guitar effect
Export formats
- PDF: print at 1:1 scale
- SVG: vector graphic
About this drill template
Drill template for the Fuzz Dog 18 Watt, sized for a Hammond 1590B enclosure (59.3 × 111.2 × 27 mm). The pre-positioned holes match the PCB's pot footprint exactly, with the footswitch centred below the 3-knob layout. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill. PCB and parts not included.
Fuzz Dog description: “Another banger from the archives of Run Off Groove: an emulation of the tones of mid-late 60's Marshall EL84-based 18 watt practice amps.”
Fuzz Dog's board for the RunOffGroove Eighteen, an amp-in-a-box circuit that emulates the mid-to-late 60s Marshall EL84-based 18-watt practice amps.
This build needs its transistors biased during setup; Fuzz Dog notes a multimeter is essential for this one.
Build notes
Three-knob layouts give you the full gain / EQ / volume triplet without crowding the enclosure. There's room inside for the PCB, jacks, and a 9V supply.
The Hammond 1590B is the standard small DIY pedal enclosure: compact enough for a crowded board, large enough for most single-effect PCBs and a 9V battery.
Vendor specs: PCB 50 x 42mm, build difficulty medium.
Drill measurements
Hole centres for the 1590B 3-Knob (Type 1) layout. X runs left to right from the centre of the face being drilled. On the enclosure face, Y is measured from the centre, positive towards the top. For holes on a side, Y is the distance down the wall, measured from the face edge. Export the PDF for a 1:1 printable version with a scale check.
| Hole | Face | X (mm) | Y (mm) | Diameter |
|---|---|---|---|---|
| Pot | Enclosure face | -16 | 42 | 7 mm (0.28 in) |
| Pot | Enclosure face | 16 | 42 | 7 mm (0.28 in) |
| Pot | Enclosure face | 0 | 20 | 7 mm (0.28 in) |
| LED | Enclosure face | -14 | -37.6 | 5 mm (0.20 in) |
| Footswitch | Enclosure face | 0 | -37.6 | 12 mm (0.47 in) |
| DC Jack | Right side | -37.6 | 13.5 | 12 mm (0.47 in) |
| Jack | Right side | -17.6 | 13.5 | 9.5 mm (0.37 in) |
| Jack | Left side | -17.6 | 13.5 | 9.5 mm (0.37 in) |
Never drilled one before? How to drill a pedal enclosure walks you through the entire process, from punching the centres to the final step drill size.
Jig A covers 1590B 3-Knob (Type 1)
Drop it over the enclosure, punch a mark through the holes this build uses, then lift it off and drill. It wraps onto the sides too, so the jacks and DC socket are covered.
See the jig pack, $12 →